html {
  font-family: 'SimHei', 'Helvetica,sans-serif', 'Helvetica';

      -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}
html {
  font-size: 625%;
}
@media screen and (max-width: 360px) {
  html {
    font-size: 300%;
  }
}
@media screen and (min-width: 361px) and (max-width: 480px) {
  html {
    font-size: 340%;
  }
}
@media screen and (min-width: 481px) and (max-width: 560px) {
  html {
    font-size: 500%;
  }
}
@media screen and (min-width: 561px) and (max-width: 750px) {
  html {
    font-size: 625%;
  }
}
@media screen and (min-width: 751px) and (max-width: 960px) {
  html {
    font-size: 750%;
  }
}
@media screen and (min-width: 961px) {
  html {
    font-size: 250%;
  }
}
